bust a nut

bust a nut

1. rude slang (acting upon oneself) To exert a significant amount of energy or work very hard to do, accomplish, or complete something. I've been busting a nut to get this presentation ready for tomorrow's meeting.He's going to have to bust a nut if he wants a place on the varsity team.

2. rude slang To ejaculate. Did she really walk on him busting a nut? How embarrassing!

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